Chapter 21: QoS Configuration Guide296 SmartSwitch Router User Reference Manualconfigured to use the default priority map only. If the commands to create and applypriority maps exist in the active configuration, they will remain in the configuration butbe ineffective.To disable the use of priority maps, enter the following command in Configure mode:If the above command is negated, ports on the SSR can use per-port priority maps. If thecommands to create and apply priority maps exist in the active configuration, they arereapplied.Displaying Priority Map InformationTo display priority maps and the ports on which they are applied, enter the followingcommand in Enable mode:Traffic Prioritization for Layer-3 & Layer-4 FlowsQoS policies applied at layer-3 and 4 allow you to assign priorities based on specific fieldsin the IP and IPX headers. You can set QoS policies for IP flows based on source IPaddress, destination IP address, source TCP/UDP port, destination TCP/UDP port, typeof service (TOS) and transport protocol (TCP or UCP). You can set QoS policies for IPXflows based on source network, source node, destination network, destination node,source port and destination port. A QoS policy set on an IP or IPX flow allows you toclassify the priority of traffic based on:• Layer-3 source-destination flows• Layer-4 source-destination flows• Layer-4 application flowsConfiguring IP QoS PoliciesTo configure an IP QoS policy, perform the following tasks:1. Identify the Layer-3 or 4 flow and set the IP QoS policy.2. Specify the precedence for the fields within an IP flow.Disable use of per-port priority maps onthe SSR.qos priority-map offDisplay prioritymapping.qos show priority-map |all
